Edit This Code:
<!DOCTYPE html>
<html>
<body>

<p id="demo"></p>

<script>
var x1 = new Object();   // A new Object object
var x2 = new String();   // A new String object
var x3 = new Number();   // A new Number object
var x4 = new Boolean();  // A new Boolean object
var x5 = new Array();    // A new Array object
var x6 = new RegExp();   // A new RegExp object
var x7 = new Function(); // A new Function object
var x8 = new Date();     // A new Date object

document.getElementById("demo").innerHTML =
"x1: " + typeof x1 + "<br>" +
"x2: " + typeof x2 + "<br>" +
"x3: " + typeof x3 + "<br>" +
"x4: " + typeof x4 + "<br>" +
"x5: " + typeof x5 + "<br>" +
"x6: " + typeof x6 + "<br>" +
"x7: " + typeof x7 + "<br>" +
"x8: " + typeof x8 + "<br>";
</script>

<p>There is no need to use String(), Number(), Boolean(), Array(), and RegExp()</p>
<p>Read the JavaScript tutorials.</p>

</body>
</html>


Result:
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